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2 CASTLE WOLFENSTEIN (1981): ACHTUNG! STEALTH GAMING STEPS OUT OF THE SHADOWS Silas Warner's Castle Wolfenstein, published by Muse in 1981 for the Apple II (later ported to Atari 8-bit, Commodore 64, and PC) laid the foundation and set the standard for all other games of stealth. Set during World War II, Castle Wolfenstein